package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.exception.BizCodeEnum;
import com.atguigu.common.exception.BizException;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.SpuBoundsTO;
import com.atguigu.common.to.SpuInfoTO;
import com.atguigu.common.to.es.SkuESModel;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.feign.CouponFeignService;
import com.atguigu.gulimall.product.feign.SearchFeignService;
import com.atguigu.gulimall.product.feign.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;

import javax.annotation.Resource;

@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Resource
    private SpuInfoDescService spuInfoDescService;

    @Resource
    private SpuImagesService spuImagesService;

    @Resource
    private AttrService attrService;

    @Resource
    private ProductAttrValueService attrValueService;

    @Resource
    private SkuInfoService skuInfoService;

    @Resource
    private SkuImagesService skuImagesService;

    @Resource
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Resource
    private CouponFeignService couponFeignService;

    @Resource
    private BrandService brandService;

    @Resource
    private CategoryService categoryService;

    @Resource
    private WareFeignService wareFeignService;

    @Resource
    private SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        //1、保存spu基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);

        //2、保存spu的描述图片 pms_spu_info_desc
        List<String> decript = vo.getDescript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(spuInfoEntity.getId());
        descEntity.setDescript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDesc(descEntity);

        //3、保存spu的图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(),images);

        //4、保存spu的规格参数 pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map(item->{
            ProductAttrValueEntity valueEntity = new ProductAttrValueEntity();
            valueEntity.setAttrId(item.getAttrId());
            AttrEntity attrEntity = attrService.getById(item.getAttrId());
            valueEntity.setAttrName(attrEntity.getAttrName());
            valueEntity.setAttrValue(item.getAttrValues());
            valueEntity.setQuickShow(item.getShowDesc());
            valueEntity.setSpuId(spuInfoEntity.getId());
            return valueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(collect);

        //5、保存spu的积分信息 gulimall_sms->sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        BeanUtils.copyProperties(bounds,spuBoundTo);
        spuBoundTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0){
            log.error("远程保存积分信息失败");
        }

        //6、保存当前spu对应的所有sku信息
        List<Skus> skus = vo.getSkus();
        if (skus !=null && skus.size() > 0){
            skus.forEach(sku->{
                String defaultImg = "";
                for (Images image : sku.getImages()){
                    if (image.getDefaultImg() == 1){
                        defaultImg = image.getImgUrl();
                    }
                }
//                private String skuName;
//                private BigDecimal price;
//                private String skuTitle;
//                private String skuSubtitle;
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(sku,skuInfoEntity);
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setCatelogId(spuInfoEntity.getCatelogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defaultImg);

                //6.1）sku的基本信息 pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);
                Long skuId = skuInfoEntity.getSkuId();

                List<SkuImagesEntity> skuImages = sku.getImages().stream().map(img->{
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{
                    //返回true就是需要，false就是去除
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //6.2）sku的图片信息 pms_sku_images
                //TODO 没有图片路径的无需保存
                skuImagesService.saveBatch(skuImages);

                //6.3) sku的销售属性信息 pms_sku_sale_attr_value
                List<Attr> attr = sku.getAttr();
                List<SkuSaleAttrValueEntity> saleAttrValueEntities = attr.stream().map(item -> {
                    SkuSaleAttrValueEntity attrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(item, attrValueEntity);
                    attrValueEntity.setSkuId(skuId);
                    return attrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(saleAttrValueEntities);

                //6.4）sku的优惠、满减等信息 gulimall_sms->sms_sku_ladder\sms_sku_full_reduction\sms_member_price
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(sku,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if (skuReductionTo.getFullCount() > 0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r2 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if (r2.getCode() != 0){
                        log.error("远程优惠、满减信息失败");
                    }
                }
            });
        }


    }

    @Override
    public void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {

        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if (!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
               w.eq("id",key).or().like("spu_name",key);
            });
        }
        String status = (String) params.get("status");
        if (!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }
        String catelogId = (String) params.get("catelogId");
        if (!StringUtils.isEmpty(catelogId) && !"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catelog_id",catelogId);
        }
        String brandId = (String) params.get("brandId");
        if (!StringUtils.isEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        /**
         * status: 0
         * key:
         * brandId: 25
         * catelogId: 225
         */
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        List<SkuESModel> skuESModels = new ArrayList<>();

        //组装需要的数据
        SkuESModel skuESModel = new SkuESModel();
        //1、查出当前spuId对应的所有sku信息，品牌的名字
        List<SkuInfoEntity> skus = skuInfoService.getSkuBySpuId(spuId);
        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        //TODO 4、查询当前sku可以被检索的规格属性
        List<ProductAttrValueEntity> baseAttrs = attrValueService.getSpuSpecification(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);

        List<SkuESModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuESModel.Attrs attrs = new SkuESModel.Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        //TODO 1、发送远程调用，库存系统查询是否有库存
        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkuHasStock(skuIdList);
            TypeReference<List<SkuStockVo>> typeReference = new TypeReference<List<SkuStockVo>>(){};
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuStockVo::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常！原因：",e);
        }

        //2、封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuESModel> uoProducts = skus.stream().map(sku -> {
            //组装需要的数据
            SkuESModel esModel = new SkuESModel();
            BeanUtils.copyProperties(sku,esModel);

            /**
             *  skuPrice skuImg hasStock hotScore
             *
             *      private String brandName;
             *      private String brandImg;
             *      private String catelogName;
             *      private List<Attrs> attrs;
             *
             *     @Data
             *     public static class Attrs {
             *         private Long attrId;
             *         private String attrName;
             *         private String attrValue;
             *     }
             */
            esModel.setSkuPrice(sku.getPrice());
            esModel.setSkuImg(sku.getSkuDefaultImg());
            //设置库存信息
            if (finalStockMap == null){
                esModel.setHasStock(true);
            }else{
                esModel.setHasStock(finalStockMap.get(sku.getSkuId()));
            }

            //TODO 2、热度评分
            esModel.setHotScore(0L);

            //TODO 3、查询品牌和分类的名字信息
            BrandEntity brand = brandService.getById(esModel.getBrandId());
            esModel.setBrandName(brand.getName());
            esModel.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(esModel.getCatelogId());
            esModel.setCatelogName(category.getName());

            //设置检索属性
            esModel.setAttrs(attrsList);

            return esModel;
        }).collect(Collectors.toList());

        //TODO 5、将数据发送给es进行保存
        R r = searchFeignService.productStatusUp(uoProducts);
        if (r.getCode() == 0){
            //远程调用成功
            //TODO 6、修改当前spu的状态
            baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            //远程调用失败
            //TODO 7、重复调用问题，接口幂等性；重试机制
            //Feign的调用流程
            /**
             * 1、构造请求数据，将对象转为json；
             *  RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2、发送请求进行执行(执行成功会解码响应数据)
             *  executeAndDecode(template);
             * 3、执行请求会有重试机制
             *  while(true){
             *      try{
             *          executeAndDecode(template);
             *      }catch(){
             *          try{
             *              retryer.continueOrPropagate(e);
             *          }catch(){
             *              throw ex;
             *          }
             *          continue;
             *      }
             *  }
             */
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        return this.baseMapper.selectById(skuInfoEntity.getSpuId());
    }

    @Override
    public SpuInfoTO getBySkuId(Long skuId) {

        SpuInfoTO spuInfoTO = new SpuInfoTO();

        SkuInfoEntity sku = skuInfoService.getById(skuId);
        Long spuId = sku.getSpuId();

        SpuInfoEntity spu = this.getById(spuId);
        // 公共属性拷贝
        BeanUtils.copyProperties(spu, spuInfoTO);

        CategoryEntity categoryEntity = categoryService.getById(spu.getCatelogId());
        BrandEntity brandEntity = brandService.getById(spu.getBrandId());
        // 独有属性赋值
        spuInfoTO.setCatelogName(categoryEntity.getName());
        spuInfoTO.setBrandName(brandEntity.getName());

        R r = couponFeignService.getBySpuId(spuId);
        if (r.getCode() != 0) {
            log.error("gulimall-product调用gulimall-coupon失败");
            throw new BizException(BizCodeEnum.CALL_FEIGN_SERVICE_FAILED, "查询积分失败");
        }
        SpuBoundsTO boundsTO = r.getData(SpuBoundsTO.class);

        spuInfoTO.setGrowBounds(boundsTO.getGrowBounds());
        spuInfoTO.setIntegration(boundsTO.getBuyBounds());

        return spuInfoTO;
    }

}